Product Description:

The HIMA F3313 is a 4-channel High-Side Signal Filter Module designed for use in the HIMA Planar4 system, a legacy safety platform renowned for its hardwired reliability and high-integrity interlocking. Unlike programmable modules in newer systems (like the H41q/H51q), the F3313 is a non-programmable, hardware-based signal conditioner, ideal for high-speed, safety-critical environments where physical hardwiring is paramount.

This module filters and stabilizes input signals from field devices such as pressure switches, emergency stop buttons, or other digital signals, ensuring high-frequency noise rejection. By removing unwanted EMI (electromagnetic interference) or contact bounce, the F3313 ensures that only clean, stable signals reach the logic system for processing. With its high-side switching, this module operates on the positive leg of a 24 VDC circuit, further enhancing signal integrity and safety.

Key Features:

• Hardwired Safety Logic:
  No software or microprocessor involved—reliability is achieved through physical wiring on the backplane, ensuring the highest level of safety and speed.

• Signal Filtering:
  Specifically designed to remove unwanted noise, including contact bounce and EMI, ensuring that only clean and reliable signals are sent to the safety logic system.

• High-Side Switching:
  The F3313 switches or monitors the positive leg (L+) of a 24 VDC circuit, making it suitable for a wide range of industrial control and safety applications.

• Safety Class:
  Capable of integration into systems rated up to SIL 4, depending on the overall architecture of the Planar4 system.

• Plug-and-Play Installation:
  Easily installed as a plug-in card into the HIMA Planar4 subrack, with no need for programming or configuration, reducing downtime and simplifying maintenance.

Technical Specifications:

Functional Logic:

The F3313 serves as the "front door" for digital signals in the HIMA Planar4 system, specifically conditioning and filtering signals from field devices (e.g., pressure switches or E-Stop buttons) before they are processed by safety logic modules. After filtering out noise and unwanted spikes, the module transmits the stabilized signal to internal logic modules (like the F32xx series AND/OR gates), which then perform the required safety actions.

Maintenance and Replacement:

• No Programming Required:
  The F3313 operates purely as a hardwired component, meaning it does not require any configuration changes when replaced. If the module fails, it can be swapped out with a spare without needing software updates or IP reconfigurations.

• Physical Wiring Considerations:
  Because the Planar4 system is hardwired, any changes to the safety logic (e.g., module replacements or adjustments) necessitate physical rewiring and a full re-validation of the safety loop.

• Pin Alignment:
  The connectors in the Planar4 subrack are fine-pinned, so care must be taken during installation to prevent damage to the pins. Forcing the module into the subrack can cause pin damage.

• LED Status Indicators:
  Each channel typically has a small LED to indicate whether the input signal is "High" (active). If the LED is off, but 24 VDC is still present at the terminal, it suggests a failure in the internal filter or opto-coupler.